Legitimacy means that Israel is a Jewish state, for the Jews, by the Jews, and will always be kept Jewish by force if necessary. That you were born of racially Jewish mothers means you have a right to the land from 2000 year old history. This is a strange legitimacy.
Normal states derive their legitimacy through force. Take the USA for example. The USA gathered its land through violence and the creation of a government controlling that violence. If you didn't like the government having sovereignty over the land, you got shot. Israel became a state in a similar way. Those who didn't like the government of Israel got shot. Why can't you be satisfied with legitimacy through force like every other nation? Why must Israeli legitimacy comb from the racially Jewish womb instead of the gun? Legitimacy by birthright is deeply racist and exactly what the Nazis tried to do. Legitimacy through sovereign force is an ancient and deeply respected rule of international law.

If Israel shows greater flexibility, it can still influence the post-nuclear deal agenda ; If Israel digs in its heels, it will increasingly become a liability rather than a strategic asset to the U.S.

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